%bibliografia per riferimenti a doc esterni usati
\cleardoublepage
\addcontentsline{toc}{chapter}{\bibname}
\begin{thebibliography}{9}
\bibitem{Guida a Oracle 9i:elementi}
M.~Abbey,
\textit{I fondamenti  di oracle 9i},
The McGraw-Hill Companies.

\bibitem{java:elementi}
Sun Microsystem,
«Official sun Java 6 API», \\
\url{http://java.sun.com/javase/6/docs/api/}.

\bibitem{xml:elementi}
w3c,
«Extensible Markup Language», \\
\url{http://www.w3.org/XML/}.

\bibitem{xsd:elementi}
w3c,
«XML Schema», \\
\url{http://www.w3.org/XML/Schema}.

\bibitem{xsu:elementi}
Oracle,
«XML SQL Utility», \\
\url{http://download.oracle.com/docs/cd/B10501_01/appdev.920/a96621/adx08xsu.htm}.
\end{thebibliography}